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Re:请问这题如何用Euler函数?

Posted by yanhe378 at 2006-12-08 13:33:07 on Problem 3090
In Reply To:Re:请问这题如何用Euler函数? Posted by:yanhe378 at 2006-12-08 13:30:41
T(1)=3;
T(n)=T(n-1)+phi(n)*2
phi(n)为欧拉函数

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